1. [Home](https://www.g2.com/) 2. ... 3. [3D Rendering Software](https://www.g2.com/categories/3d-rendering) 4. [Arnold Discussions](https://www.g2.com/products/arnold/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_83efad55ec5284e0bf4733bcddba2ea8/arnold.png "Product Avatar Image") ](/products/arnold/reviews) [ Arnold ](/products/arnold/reviews) (12)4.0/5 Arnold is a fast, memory efficient and scalable physically-based raytracer. Show More * * * ### 41.0 Nps Score Already have Arnold? ### All Arnold Discussions Search Most CommentedMost HelpfulPinned by G2Newest All DiscussionsDiscussions with CommentsPinned by G2Discussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Pinned by G2 Newest Filter by All Discussions Discussions with Comments Pinned by G2 Discussions without Comments ![Verified User in Animation](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Animation") G2 Verified User in Animation • over 6 years ago More Options - [ # What is the best way to implement spec maps into Arnold's standard shaders ](/discussions/what-is-the-best-way-to-implement-spec-maps-into-arnold-s-standard-shaders) I am not sure how to implement spec maps into Arnolds aistandardshader. When I apply it to the color under reflections, I can't see anything, when I apply it to the strength under reflections, I can't see anything [ 3D Rendering Software ](https://www.g2.com/tags/3d-rendering-software) * * * \<0\>0\>Upvotes 1 * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Arnold+questions+and+get+answers+from+expert+users+in+our+Arnold+Discussions+section.&title=Arnold+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Arnold+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Arnold+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss%0aAsk+Arnold+questions+and+get+answers+from+expert+users+in+our+Arnold+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=Arnold+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss%0aAsk+Arnold+questions+and+get+answers+from+expert+users+in+our+Arnold+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") G2 Verified User • over 4 years ago More Options - [ # How do I use RGBA AOV in grey scale pass? ](/discussions/how-do-i-use-rgba-aov-in-grey-scale-pass) In mental ray we can render associate passes in grey scale so we can have more flexibility in comp while doing beautification of characters. Can we render like that in Arnold ? [ 3D Rendering Software ](https://www.g2.com/tags/3d-rendering-software) * * * \<0\>0\>Upvotes 0 * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Arnold+questions+and+get+answers+from+expert+users+in+our+Arnold+Discussions+section.&title=Arnold+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Arnold+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Arnold+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss%0aAsk+Arnold+questions+and+get+answers+from+expert+users+in+our+Arnold+Discussions+section.) 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Answer a few questions to help the Arnold community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/authorize?form=signup&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2Farnold%2Fdiscuss%3Fsmall_ask%3Darnold) No ## Top Contributors in Arnold 1 ![Amanda M.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Amanda M.") AM Loading... ### [Amanda M.](https://www.g2.com/users/55777f47-4d05-4102-8115-1108b87f9da1 "Amanda M.") 3D Modeler 1 pt